Mobile PSA Oxygen Generation Trailer

Oxygen supply in remote sites, temporary workspaces, and emergency scenarios often faces logistical constraints due to cylinder transport limitations and cryogenic plant dependency. The mobile PSA oxygen generation trailer provides a self-contained, towable solution that produces gaseous oxygen from ambient air through physical separation, without requiring external feedstock or stored liquid oxygen.

Operating Principle

The system employs Pressure Swing Adsorption (PSA) technology with two adsorber vessels filled with synthetic zeolite molecular sieve. Under elevated pressure, nitrogen molecules are preferentially retained by the sieve material; upon pressure reduction, the adsorbed nitrogen is desorbed and vented. Oxygen, being less strongly adsorbed, passes through as the primary effluent. A programmable logic controller orchestrates alternating pressurisation and depressurisation cycles between the two towers, ensuring a continuous product stream at stable purity.

Performance Specifications

Mechanical & Process Configuration

• Chassis: Heavy-duty tandem-axle trailer, hot-dip galvanised frame with pneumatic suspension and hydraulic overrun brake, compliant with standard road transport regulations for towed equipment.
• Air treatment train: Integrated rotary-screw compressor, refrigerated dryer, and coalescing filtration stages delivering oil-free air with particulate retention ≤ 0.01 μm, protecting the sieve bed from contamination and degradation.
• Control system: Industrial-grade PLC with HMI touchscreen; parameter logging, cycle monitoring, and fault diagnostics are accessible locally and via optional remote telemetry module (Ethernet/4G).
• Utility interface: Single-point electrical connection (380 V / 50 Hz or 460 V / 60 Hz); diesel-driven hydraulic power option available for off-grid deployment.

Application Context

This equipment is applicable to industrial and institutional operations requiring temporary, standby, or supplementary oxygen supply. Typical fields include underground mining (ventilation oxygen blending), petrochemical process support, municipal wastewater treatment (ozone feed and biological aeration), emergency medical field units, and offshore platform auxiliary systems. Final system sizing and cycle parameters depend on site-specific barometric pressure, ambient temperature, and required purity profile; each installation is simulated prior to manufacturing.

Design Codes & Certification

Manufacturing and pressure-containing components conform to ISO 9001 (quality management), ISO 13485 (for medical-grade variants), ASME Section VIII Division 1, and PED 2014/68/EU. Additional compliance with EAC and GB/T standards is maintained for regional deliveries. Factory acceptance testing includes a 72-hour uninterrupted run at rated conditions with continuous purity and flow verification.

Engineering Customisation

• Purity/flow adjustment: achieved through adsorbent quantity variation, cycle timing optimisation, and tower diameter scaling.
• Climate adaptation packages: low-temperature start-up heating elements, high-ambient cooling radiators, and enclosure thermal insulation.
• Power source alternatives: direct electric motor drive, diesel engine–hydraulic combination, or solar–battery hybrid (for low-power intermittent duty).
• Integration provisions: outlet manifold flanges, customer-specific communication protocols (Modbus TCP/IP, Profibus), and acoustic enclosure for noise-sensitive sites.

Technical Support & Documentation

Each unit is supplied with a complete engineering dossier: P&ID, electrical schematics, operation and maintenance manuals, and certified material test reports for all pressure parts. Remote diagnostic assistance and spare parts cross-reference lists are available through the manufacturer's technical desk; on-site commissioning assistance can be arranged separately.

Shenger Gas designs and fabricates the complete adsorption system, including sieve filling, vessel fabrication, and trailer assembly under one quality management system. Technical consultation and site-specific performance estimates are provided upon request, based on actual ambient conditions and load profiles.

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